Portable refrigerator freezer



FIG. 1 is a perspective view of a portable refrigerator freezer showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view of thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof. 

The ornamental design for a portable refrigerator freezer, as shown. 